12121200221222 has 4 divisors (see below), whose sum is σ = 18181800331836. Its totient is φ = 6060600110610.

The previous prime is 12121200221177. The next prime is 12121200221243. The reversal of 12121200221222 is 22212200212121.

12121200221222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12121200221194 and 12121200221203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030300055304 + ... + 3030300055307.

It is an arithmetic number, because the mean of its divisors is an integer number (4545450082959).

Almost surely, 2^{12121200221222} is an apocalyptic number.

12121200221222 is a deficient number, since it is larger than the sum of its proper divisors (6060600110614).

12121200221222 is an equidigital number, since it uses as much as digits as its factorization.

12121200221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060600110613.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12121200221222 its reverse (22212200212121), we get a palindrome (34333400433343).

The spelling of 12121200221222 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, two hundred twenty-one thousand, two hundred twenty-two".